Deep Dive into Pin Control in Zephyr
summary
Zephyr introduces a standardized pinctrl API that moves vendor quirks into devicetree and an soc header, exposes one driver call pin control configure pins, and reuses a Linux-inspired state-model with default and sleep states so drivers apply states instead of bit fiddling. Two devicetree styles (grouping or per-pin nodes) map multiplexing and properties. A RAM-backed option called dynamic pin control lets configs swap at boot, demonstrated by rerouting UART to alternate pins with a button, and the sample works on Nordic hardware.
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chapters (12)
- 0:00Intro
- 1:43Pin control vs. GPIO
- 3:33Pin Control in Zephyr 3.1: Example (W)
- 6:17State Model Background
- 7:42State Model: Example
- 8:16Standard States
- 14:25Pin configuration grouping approach (1)
- 17:16Pin configuration: node approach (1)
- 22:13Pin Control Drivers: Example (111)
- 25:24Using pin control in drivers (1)
- 30:27Conclusions
- 33:36Dymamic Pin Control: Example (0)
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